Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* Remote target communications for d10v connected via a serial line. |
2 | Copyright 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997 Free | |
3 | Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "defs.h" | |
22 | #include "gdb_string.h" | |
23 | #include <fcntl.h> | |
24 | #include "frame.h" | |
25 | #include "inferior.h" | |
26 | #include "bfd.h" | |
27 | #include "symfile.h" | |
28 | #include "target.h" | |
29 | #include "wait.h" | |
30 | /*#include "terminal.h"*/ | |
31 | #include "gdbcmd.h" | |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
35 | ||
36 | #include "dcache.h" | |
37 | ||
38 | #ifdef USG | |
39 | #include <sys/types.h> | |
40 | #endif | |
41 | ||
42 | #include <signal.h> | |
43 | #include "serial.h" | |
44 | ||
45 | /* Prototypes for local functions */ | |
46 | ||
392a587b JM |
47 | extern void _initialize_remote_d10v PARAMS ((void)); |
48 | ||
c906108c SS |
49 | static void remote_d10v_open PARAMS ((char *name, int from_tty)); |
50 | ||
51 | /* Define the target subroutine names */ | |
52 | static struct target_ops remote_d10v_ops; | |
53 | ||
54 | /* Open a connection to a remote debugger. | |
55 | NAME is the filename used for communication. */ | |
56 | ||
57 | static void | |
58 | remote_d10v_open (name, from_tty) | |
59 | char *name; | |
60 | int from_tty; | |
61 | { | |
62 | pop_target (); | |
63 | push_remote_target (name, from_tty); | |
64 | } | |
65 | ||
66 | ||
67 | /* Translate a GDB virtual ADDR/LEN into a format the remote target | |
68 | understands. Returns number of bytes that can be transfered | |
69 | starting at taddr, ZERO if no bytes can be transfered. */ | |
392a587b JM |
70 | void |
71 | remote_d10v_translate_xfer_address (memaddr, nr_bytes, targ_addr, targ_len) | |
c906108c SS |
72 | CORE_ADDR memaddr; |
73 | int nr_bytes; | |
392a587b JM |
74 | CORE_ADDR *targ_addr; |
75 | int *targ_len; | |
c906108c SS |
76 | { |
77 | CORE_ADDR phys; | |
78 | CORE_ADDR seg; | |
79 | CORE_ADDR off; | |
80 | char *from = "unknown"; | |
81 | char *to = "unknown"; | |
82 | unsigned short imap0 = read_register (IMAP0_REGNUM); | |
83 | unsigned short imap1 = read_register (IMAP1_REGNUM); | |
84 | unsigned short dmap = read_register (DMAP_REGNUM); | |
85 | ||
86 | /* GDB interprets addresses as: | |
87 | ||
88 | 0x00xxxxxx: Logical data address segment (DMAP translated memory) | |
89 | 0x01xxxxxx: Logical instruction address segment (IMAP translated memory) | |
90 | 0x10xxxxxx: Physical data memory segment (On-chip data memory) | |
91 | 0x11xxxxxx: Physical instruction memory segment (On-chip insn memory) | |
92 | 0x12xxxxxx: Phisical unified memory segment (Unified memory) | |
93 | ||
94 | The remote d10v board interprets addresses as: | |
95 | ||
96 | 0x00xxxxxx: Phisical unified memory segment (Unified memory) | |
97 | 0x01xxxxxx: Physical instruction memory segment (On-chip insn memory) | |
98 | 0x02xxxxxx: Physical data memory segment (On-chip data memory) | |
99 | ||
100 | Translate according to current IMAP/dmap registers */ | |
101 | ||
102 | enum { | |
103 | targ_unified = 0x00000000, | |
104 | targ_insn = 0x01000000, | |
105 | targ_data = 0x02000000, | |
106 | }; | |
107 | ||
108 | seg = (memaddr >> 24); | |
109 | off = (memaddr & 0xffffffL); | |
110 | ||
111 | switch (seg) | |
112 | { | |
113 | case 0x00: /* in logical data address segment */ | |
114 | { | |
115 | from = "logical-data"; | |
116 | if (off <= 0x7fffL) | |
117 | { | |
118 | /* On chip data */ | |
119 | phys = targ_data + off; | |
120 | if (off + nr_bytes > 0x7fffL) | |
121 | /* don't cross VM boundary */ | |
122 | nr_bytes = 0x7fffL - off + 1; | |
123 | to = "chip-data"; | |
124 | } | |
125 | else if (off <= 0xbfffL) | |
126 | { | |
127 | short map = dmap; | |
128 | if (map & 0x1000) | |
129 | { | |
130 | /* Instruction memory */ | |
131 | phys = targ_insn | ((map & 0xf) << 14) | (off & 0x3fff); | |
132 | to = "chip-insn"; | |
133 | } | |
134 | else | |
135 | { | |
136 | /* Unified memory */ | |
137 | phys = targ_unified | ((map & 0x3ff) << 14) | (off & 0x3fff); | |
138 | to = "unified"; | |
139 | } | |
140 | if (off + nr_bytes > 0xbfffL) | |
141 | /* don't cross VM boundary */ | |
142 | nr_bytes = (0xbfffL - off + 1); | |
143 | } | |
144 | else | |
145 | { | |
146 | /* Logical address out side of data segments, not supported */ | |
392a587b JM |
147 | *targ_len = 0; |
148 | return; | |
c906108c SS |
149 | } |
150 | break; | |
151 | } | |
152 | ||
153 | case 0x01: /* in logical instruction address segment */ | |
154 | { | |
155 | short map; | |
156 | from = "logical-insn"; | |
157 | if (off <= 0x1ffffL) | |
158 | { | |
159 | map = imap0; | |
160 | } | |
161 | else if (off <= 0x3ffffL) | |
162 | { | |
163 | map = imap1; | |
164 | } | |
165 | else | |
166 | { | |
167 | /* Logical address outside of IMAP[01] segment, not | |
168 | supported */ | |
392a587b JM |
169 | *targ_len = 0; |
170 | return; | |
c906108c SS |
171 | } |
172 | if ((off & 0x1ffff) + nr_bytes > 0x1ffffL) | |
173 | { | |
174 | /* don't cross VM boundary */ | |
175 | nr_bytes = 0x1ffffL - (off & 0x1ffffL) + 1; | |
176 | } | |
177 | if (map & 0x1000) | |
178 | /* Instruction memory */ | |
179 | { | |
180 | phys = targ_insn | off; | |
181 | to = "chip-insn"; | |
182 | } | |
183 | else | |
184 | { | |
185 | phys = ((map & 0x7fL) << 17) + (off & 0x1ffffL); | |
186 | if (phys > 0xffffffL) | |
392a587b JM |
187 | { |
188 | /* Address outside of unified address segment */ | |
189 | *targ_len = 0; | |
190 | return; | |
191 | } | |
c906108c SS |
192 | phys |= targ_unified; |
193 | to = "unified"; | |
194 | } | |
195 | break; | |
196 | } | |
197 | ||
198 | case 0x10: /* Physical data memory segment */ | |
199 | from = "phys-data"; | |
200 | phys = targ_data | off; | |
201 | to = "chip-data"; | |
202 | break; | |
203 | ||
204 | case 0x11: /* Physical instruction memory */ | |
205 | from = "phys-insn"; | |
206 | phys = targ_insn | off; | |
207 | to = "chip-insn"; | |
208 | break; | |
209 | ||
210 | case 0x12: /* Physical unified memory */ | |
211 | from = "phys-unified"; | |
212 | phys = targ_unified | off; | |
213 | to = "unified"; | |
214 | break; | |
215 | ||
216 | default: | |
392a587b JM |
217 | *targ_len = 0; |
218 | return; | |
c906108c SS |
219 | } |
220 | ||
221 | ||
392a587b JM |
222 | *targ_addr = phys; |
223 | *targ_len = nr_bytes; | |
c906108c SS |
224 | } |
225 | ||
226 | ||
227 | void | |
228 | _initialize_remote_d10v () | |
229 | { | |
230 | remote_d10v_ops.to_shortname = "d10v"; | |
231 | remote_d10v_ops.to_longname = "Remote d10v serial target in gdb-specific protocol"; | |
232 | remote_d10v_ops.to_doc = "Use a remote d10v via a serial line, using a gdb-specific protocol.\n\ | |
233 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
234 | remote_d10v_ops.to_open = remote_d10v_open; | |
235 | ||
236 | add_target (&remote_d10v_ops); | |
237 | } |